190501-01-99-CN | Bently Nevada Velomitor CT Velocity Transducer

Introduction to the Bently Nevada 190501-01-99-CN

When machinery vibration threatens uptime, the 190501-01-99-CN from Bently Nevada provides reliable velocity sensing. This Velomitor CT transducer is engineered for industrial rotating equipment. It converts mechanical vibration into an electrical signal. That signal helps maintenance teams detect issues early.

This model includes a 32-foot cable and a 3/8-inch stud mount. It is built for permanent installation on critical assets. The transducer operates across a wide temperature range. It suits harsh environments found in plants and refineries.

Key Features and Technical Specifications

• Sensitivity: 3.94 mV/mm/s (100 mV/in/s) ±5%.
• Frequency Response: 3.0 Hz to 900 Hz (180 to 54,000 cpm) ±1.0 dB; 1.5 Hz to 1.0 kHz (90 to 60,000 cpm) ±3.0 dB.
• Temperature Sensitivity: -8% to +5% typical over the operating temperature range.
• Transverse Response: Less than 5% of the axial sensitivity.
• Amplitude Linearity: ±2% to 63.5 mm/s pk (2.5 in/s pk).
• Mounted Resonant Frequency: 9 kHz minimum (stud mounted, except quick disconnect).
• Output Bias Voltage: 10.1 Vdc ± 1.0 Vdc, Pin A referenced to Pin B.
• Dynamic Output Impedance: <400 Ω typical.
• Broadband: 0.229 mm/s (0.009 in/s) pk.
• Base Strain Sensitivity: 0.43 mm/s/μstrain (0.017 in/s/μstrain).
• Grounding: Internal electronics are isolated from case.
• Maximum Cable Length: 305 metres (1,000 ft.) of cable (part number 02173006) with no degradation of signal.
• Operating Temperature: -40°C to +85°C (-40°F to +185°F).
• Storage Temperature: -40°C to +100°C (-40°F to +212°F).
• Shock Limit: 5000 g pk, maximum.
• Humidity Limit: 100% condensing, non-submerged.
• Magnetic Field Susceptibility: <0.0068 mm/s/gauss (0.268 mil/s/gauss) @ 50 gauss, 50-60 Hz.
• Weight: <297 g (10.5 oz.), typical.
• Mounting Surface: 33 mm diameter (1.3 in diameter).
• Height: 82 mm (3.2 in).
• Case Material: 316L stainless steel.
• Connector: 2-pin 316L stainless steel MIL-C-5015, top.
• Mounting Torque: 4.5 N-m ± 0.6 N-m (40 in–lbf ± 5 in-lbf).
• Polarity: Pin A goes positive with respect to Pin B when velocity is from base to top of the transducer.
• Mounting Angle: Any orientation.

The unique insight here is the broad frequency response. It captures both low-speed and high-speed machinery vibrations. This helps identify imbalance, misalignment, and bearing faults. The 316L stainless steel case resists corrosion. That extends service life in wet or chemical environments.

Real-World Applications

This transducer is ideal for monitoring pumps, motors, compressors, and fans. It is also used on turbines and gearboxes. The wide temperature range suits outdoor installations. The 100% condensing humidity limit allows use in washdown areas. The magnetic field susceptibility rating ensures accuracy near electrical equipment.

For example, a petrochemical plant can install it on a critical pump. The 32-foot cable reaches the monitoring system easily. The stud mount secures it firmly. The transducer then provides continuous velocity data. This data supports predictive maintenance programs.

Installation and Setup

Mount the transducer using the 3/8-inch stud. Apply the specified mounting torque of 4.5 N-m ± 0.6 N-m. Ensure the mounting surface is clean and flat. The transducer can be oriented in any direction. This flexibility simplifies installation in tight spaces.

Connect the included 32-foot cable to the 2-pin MIL-C-5015 connector. Observe polarity: Pin A positive with respect to Pin B when velocity is upward. For longer runs, use up to 305 meters of approved cable. The signal remains intact without degradation.

Maintenance and Reliability

Regular inspection is key to long-term reliability. Check the mounting torque periodically. Verify the cable connections are secure. Inspect for physical damage or corrosion. The 316L stainless steel case resists rust, but routine checks are still wise.

Because the transducer is hermetically sealed, no internal maintenance is needed. Simply keep the exterior clean. Avoid submerging the unit. The humidity limit is 100% condensing, not submerged. Following these steps ensures accurate readings for years.

Compatibility and Integration

The 190501-01-99-CN works with Bently Nevada monitoring systems. It provides a standard velocity signal. This signal is compatible with most vibration monitors. The output bias voltage is 10.1 Vdc. This allows direct connection to many data collectors.

For system integration, refer to the official Bently Nevada documentation. The transducer is not a network device. It is a sensor. It connects via cable to a monitor or analyzer. That simplicity makes it easy to retrofit into existing systems.

Troubleshooting Common Issues

If the signal is absent, check the cable connection. Verify the connector is fully seated. If the signal is noisy, check for ground loops. The internal electronics are isolated from the case. This reduces ground loop issues.

If the output bias voltage is outside 10.1 Vdc ± 1.0 Vdc, the transducer may be faulty. Contact Petro Auto Tech for a replacement. If the frequency response seems off, verify the mounting torque. A loose mount can affect readings.

FAQ

Q: What is the sensitivity of the 190501-01-99-CN?

A: The sensitivity is 3.94 mV/mm/s (100 mV/in/s) ±5%.

Q: What is the maximum cable length for this transducer?

A: The maximum cable length is 305 metres (1,000 ft.) using part number 02173006.

Q: What is the operating temperature range?

A: The operating temperature range is -40°C to +85°C (-40°F to +185°F).

Q: Is the transducer intrinsically safe?

A: The 190501-01-99-CN has a country-specific approval option (CN). For intrinsic safety ratings, refer to the agency approval options 01 through 04.

Q: What is the mounting torque requirement?

A: The mounting torque is 4.5 N-m ± 0.6 N-m (40 in–lbf ± 5 in-lbf).

Product Support and Availability

Petro Auto Tech offers the Bently Nevada 190501-01-99-CN in stock. It is ready to ship. Contact Petro Auto Tech for pricing and lead times. Our team can assist with technical questions. We are your trusted industrial automation parts supplier.